Color indicator apparatus for presence of oxygen

Details Color indicator apparatus for presence of oxygen Color indicator apparatus for presence of oxygen

1975-12-22

1977-05-17

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

G01N 3122

Patent

active

040239349

ABSTRACT:
A color indicator apparatus for determining the presence of oxygen which comprises a container which permits flow of gas thereto, an ampoule in the container, said ampoule containing a redox color indicator liquid, and an absorbent material, for the liquid in the ampoule, in the container. Typically the redox color indicator is methylene blue or resazurin. The apparatus is useful for determining if an anaerobic atmosphere exists around a micro-organism culture.

REFERENCES:
patent: 1644014 (1927-10-01), Gordon et al.
patent: 2487077 (1949-11-01), Shepherd
patent: 3022141 (1962-02-01), Grosskopf
patent: 3446596 (1969-05-01), Salivar et al.
Hackh's Chemical Dictionary, 4th Edn., McGraw-Hill, pp. 427 & 578.

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